Pull-chain device



L. V. ABONSON.

PULL CHAIN DEVICE.

APPLICATION FILED NOV. 12. 1911.

EAMAMO Patented Nov. 7, 1922.

Patented l lov. 7, 1922,

LOUIS V. ABONSON, OF NEWVABK, NEW JERSEY.

PULL-CHAIN DEVICE.

Application filed November 12. 1917.

1/ 0 all whom it may concern:

Be it known that I. Lorrrs V. AnoNsoN, a citizen of the United States, and a resident of Newark, in the county of Essex and State of New Jersey, have invented a certain new and useful Improvement in Pull-Chain I evices, of which the following is a specification.

This invention relates to pull chain devices such as are used in the operation of electric lamp socket keys.

The primary object of this invention is to provide an improved and simpli ied device of this general nature that will have the characteristic of being readily attached in operative position on a Socket key without the use of tools.

With this and other objects in view the invention consists broadly in the provision of a comparatively rigid rod or wire formed intermediate its ends for attachment to a socket key and provided at each end with a suitable pull chain or cord.

Other features of the invention will be hereinafter described.

The features of the invention referred to will be readily understood from an inspection of the accompanying drawing in which a pull chain device is shown that embodies the invention in a preferred form. dra wing.

Figure l is a perspective view of an electric chandelier showing two lamp socket keys equipped with devices embodying the invention.

Figure 2 is a plan view of a lamp socket and key equipped with a pull chain device embodying the invention.

Figure 3 is a view in elevation of the dcvice shown in Figure 2.

Figure 4 is a perspective detail view of the key engaging portion of the pull chain device.

The pull chain device shown in the drawing comprises a short length of comparatively rigid wire 1 twisted substantially at its center into two or more coils 2 that are adapted to hold between them the flattened finger piece of a key 8 carried by the socket 4 for controlling the lighting of an electric bulb such as 5 mounted in the socket.

The wire rod 1 preferably possesses such a degree of resiliency as to grasp the socket Tn the- Serial No. 201,432.

key 3 firmly when the coils 2 are forced one on either side of the key. so that. while the wire 1 is readil attached to the key, it cannot be 1lislodged from its position except by a deliberate act.

The opposite ends of the wire 1 are provided with eyes (3 to which is attached a single looped strand of cord or chain 7 of such a length that it can be readily grasped to n'ianipulate the key in a well-known manner. Obviously. instead of the single loop of chain 7. a separate chain can be provided for each end of the wire '1. if desired.

it will be seen that a pull. chain device has thus been provided in which simplicity of construction is an important factor. This is secured by forming the device of a single piece of wire having a portion formed into convolutions to directly grasp a socket key. This furnishes a construction so simple that the device can be applied in operative position on a socket or released therefrom by anyone. however mechanically unskilled, and wholly without the use of tools. By its use the uncomfortable straining to reach a key done away with and the keys can be easily converted into controlling devices of the pull chain type, whereby the operation of the socket switches is greatly facilitated.

Having thus described my invention, what I claim as new and desire to secure by Let ters Patent of the United States, is:

l. A. pull chain device comprising: a rigid bar having a pair of coils formed therein about an substantially coincident with said bar.

2. A pull chain device comprising: a rigid one-piece wire having a pair of key-grasping coils formed therein in planes substantially transverse to said wire.

3. A pull chain device comprising: a single-length rigid bar having a pair of coils formed therein in such relation to each other as to grasp a socket key therebetween, said coils being arranged to exert a clamping action on the interposed key. the ends of said bar extending in opposite directions away from said. coils.

Signed at Newark. in the county of Essex and State of New Jersey. this 23rd day of Oct, 1917.

LOUIS V. ARONSON. 

